Speidel's RS-MO and RA-MO Rectangular Tanks are a sister line to their FS-MO & AS-MO flagship storage and fermentation tanks, and can be arranged more closely together to get the most our of your limited floor space. Featuring a huge range of tank capacities, these tanks can be customized with a wide array of add-on features, and can be stacked to take advantage of vertical space in your facility. The RS-MO tank is the tank used for the base, and up to two RA-MO tanks stack on. Please note that with each width range there is a maximum total volume for all tanks in a stack shown below, due to the weight of the tanks when full.